Section 7900. Monitoring

A. The provisions of 9VAC5-40-40 (Monitoring) apply.

B. Add-on dryer exhaust control device.

1. The owner of a subject heatset web offset lithographic printing press shall install, calibrate, maintain, and operate a temperature monitoring device according to the manufacturer's instructions at the outlet of the control device. The monitoring temperature shall be set during the testing required to demonstrate compliance with the emission standard in 9VAC5-40-7820 B. Monitoring shall be performed only when the unit is operational.

2. The temperature monitoring device shall be equipped with a continuous recorder. Both the temperature monitoring device and the continuous recorder shall have an accuracy of 0.5°F.

3. The dryer pressure shall be maintained lower than the pressroom air pressure so that air flows into the dryer at all times when the press is operating. A 100% emissions capture efficiency for the dryer shall be established using an air flow direction indicator, such as a smoke stick or aluminum ribbons.

C. Fountain solution volatile organic compound concentration.

1. The purpose of monitoring the volatile organic compound concentration in the fountain is to provide data that can be correlated to the amount of material used when the fountain solution contains alcohol and complies with the limits listed in 9VAC5-40-7820. The following methods may be used to determine the concentration of alcohol in the fountain solution in lieu of calculating the alcohol concentration using the protocol of 9VAC5-40-7890 E. The monitoring requirements of subdivisions 1 a through c of this subsection shall be required only if noncompliance with 9VAC5-40-7820 A is established.

a. The owner of any offset lithographic printing press shall monitor the alcohol concentration of the fountain solution with a refractometer that is corrected for temperature at least once for each eight-hour shift or once per batch, whichever is longer. The refractometer shall have a visual, analog, or digital readout with an accuracy of 0.5%. A standard solution shall be used to calibrate the refractometer for the type of alcohol used in the fountain. Alternatively, the refractometer shall be standardized against measurements performed to determine compliance according to the procedures described in 9VAC5-40-7890 D.

b. Alternatively, the owner of any offset lithographic printing press shall monitor fountain solution alcohol concentration with a hydrometer equipped with a temperature correction at least once for each eight-hour shift or once per batch, whichever is longer. The hydrometer shall have a visual, analog, or digital readout with an accuracy of 0.5%. A standard solution shall be used to calibrate the hydrometer for the type of alcohol used in the fountain. Alternatively, the hydrometer shall be standardized against measurements performed to determine compliance according to the procedures described in 9VAC5-40-7890 D.

c. The volatile organic compound content of the fountain solution may be monitored with a conductivity meter if it is determined that a refractometer or hydrometer cannot be used for monitoring the type of volatile organic compounds in the fountain solution. The conductivity meter reading for the fountain solution shall be referenced to the conductivity of the incoming water.

2. If, through recordkeeping for a period of six months or more, the printing process is shown to consistently meet the requirements in 9VAC5-40-7890 D, the monitoring requirement may be waived or extended to a longer period of time.

D. Fountain solution temperature.

1. The owner of any offset lithographic printing press using refrigeration equipment on the fountain shall install, maintain, and continuously operate a temperature monitor of the fountain solution reservoir.

2. The temperature on the temperature monitor shall be read and recorded at least once per operating day to verify that the refrigeration system is operating properly.

Historical Notes

Derived from Volume 12, Issue 11, eff. April 1, 1996.

Statutory Authority

§ 10.1-1308 of the Code of Virginia.